Where do replacement Eloi come from, then? I tend to think of Teletubbies as being immortal critters, turned Eloi-like from living in a hyper-benign environment (like all those birds that became flightless in pre-human New Zealand), more "Orchid Garden" than "Time Machine". And I do wonder if Papa Smurf is the only adult Smurf (and many other Smurfish questions). That's the sort of brain I have.